/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:28,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:28,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:28,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:51:28,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:28,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:28,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:28,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:28,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:28,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:28,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:28,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:28,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:28,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:28,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:28,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:28,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:28,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:28,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:28,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:28,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:51:28,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:28,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:28,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:28,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:28,482 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:28,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:28,482 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:28,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:28,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:28,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:28,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:28,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:28,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:28,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:28,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:28,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:28,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:28,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:28,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:28,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:28,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:28,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:28,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:28,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:28,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:28,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:28,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:28,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:28,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:28,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:28,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:28,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:28,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:28,941 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:28,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2021-02-23 13:51:29,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0362e0d5/8f25922cfca745b2babaf162e07f5ee8/FLAGcd036e3d9 [2021-02-23 13:51:29,750 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:29,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2021-02-23 13:51:29,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0362e0d5/8f25922cfca745b2babaf162e07f5ee8/FLAGcd036e3d9 [2021-02-23 13:51:30,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0362e0d5/8f25922cfca745b2babaf162e07f5ee8 [2021-02-23 13:51:30,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:30,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:30,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:30,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:30,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:30,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7660ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30, skipping insertion in model container [2021-02-23 13:51:30,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:30,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:30,355 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c[589,602] [2021-02-23 13:51:30,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:30,389 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:30,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c[589,602] [2021-02-23 13:51:30,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:30,431 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:30,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30 WrapperNode [2021-02-23 13:51:30,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:30,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:30,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:30,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:30,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:30,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:30,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:30,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:30,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:31,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:31,069 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:51:31,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:31 BoogieIcfgContainer [2021-02-23 13:51:31,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:31,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:31,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:31,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:31,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:30" (1/3) ... [2021-02-23 13:51:31,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd5218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:31, skipping insertion in model container [2021-02-23 13:51:31,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30" (2/3) ... [2021-02-23 13:51:31,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd5218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:31, skipping insertion in model container [2021-02-23 13:51:31,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:31" (3/3) ... [2021-02-23 13:51:31,093 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2021-02-23 13:51:31,110 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:31,116 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:31,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:31,185 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:31,186 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:31,186 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:31,186 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:31,186 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:31,186 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:31,187 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:31,187 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-23 13:51:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:51:31,231 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:31,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:31,233 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash -9733170, now seen corresponding path program 1 times [2021-02-23 13:51:31,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:31,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850478838] [2021-02-23 13:51:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:31,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:31,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:31,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:31,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:31,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:31,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:31,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:31,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:31,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:31,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:31,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850478838] [2021-02-23 13:51:31,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:31,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:31,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317053395] [2021-02-23 13:51:31,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:31,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:31,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:31,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:31,728 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-23 13:51:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:31,893 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-23 13:51:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:31,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 13:51:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:31,904 INFO L225 Difference]: With dead ends: 60 [2021-02-23 13:51:31,905 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:51:31,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:51:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-23 13:51:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 13:51:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-23 13:51:31,959 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-02-23 13:51:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:31,959 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-23 13:51:31,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-23 13:51:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:51:31,961 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:31,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:31,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:31,962 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash -596539184, now seen corresponding path program 1 times [2021-02-23 13:51:31,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:31,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379214699] [2021-02-23 13:51:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:32,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:32,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:32,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379214699] [2021-02-23 13:51:32,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:32,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:32,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063528414] [2021-02-23 13:51:32,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:32,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:32,143 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-23 13:51:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:32,407 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-02-23 13:51:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:32,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-02-23 13:51:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:32,411 INFO L225 Difference]: With dead ends: 54 [2021-02-23 13:51:32,412 INFO L226 Difference]: Without dead ends: 39 [2021-02-23 13:51:32,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:51:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-23 13:51:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-02-23 13:51:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 13:51:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-23 13:51:32,427 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2021-02-23 13:51:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:32,427 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-23 13:51:32,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-23 13:51:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:51:32,429 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:32,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:32,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:32,429 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2074913930, now seen corresponding path program 1 times [2021-02-23 13:51:32,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:32,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614849972] [2021-02-23 13:51:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:32,494 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:32,589 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:32,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:32,649 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:32,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:32,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:32 BoogieIcfgContainer [2021-02-23 13:51:32,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:32,697 INFO L168 Benchmark]: Toolchain (without parser) took 2572.32 ms. Allocated memory is still 161.5 MB. Free memory was 137.7 MB in the beginning and 66.1 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:32,697 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:32,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.99 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 126.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:32,699 INFO L168 Benchmark]: Boogie Preprocessor took 45.35 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:32,700 INFO L168 Benchmark]: RCFGBuilder took 592.43 ms. Allocated memory is still 161.5 MB. Free memory was 124.9 MB in the beginning and 141.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:32,701 INFO L168 Benchmark]: TraceAbstraction took 1621.56 ms. Allocated memory is still 161.5 MB. Free memory was 141.1 MB in the beginning and 66.1 MB in the end (delta: 75.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:32,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.99 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 126.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.35 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 592.43 ms. Allocated memory is still 161.5 MB. Free memory was 124.9 MB in the beginning and 141.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1621.56 ms. Allocated memory is still 161.5 MB. Free memory was 141.1 MB in the beginning and 66.1 MB in the end (delta: 75.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i < N [L32] a[i] = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND TRUE i < N VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L37] COND TRUE N%2 == 1 [L39] EXPR a[i] [L39] a[i] = a[i] + 2 [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i < N) VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] i = 0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L47] COND TRUE i < N [L49] EXPR a[i] VAL [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] reach_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 52 SDslu, 11 SDs, 0 SdLazy, 84 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...